CN110590278A - Production method of nano composite sand-based self-cleaning environment-friendly water permeable brick and road - Google Patents
Production method of nano composite sand-based self-cleaning environment-friendly water permeable brick and road Download PDFInfo
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- CN110590278A CN110590278A CN201910862431.1A CN201910862431A CN110590278A CN 110590278 A CN110590278 A CN 110590278A CN 201910862431 A CN201910862431 A CN 201910862431A CN 110590278 A CN110590278 A CN 110590278A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1066—Oxides, Hydroxides
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/14—Polyepoxides
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0038—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by superficial sintering or bonding of particulate matter
- C04B38/0041—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by superficial sintering or bonding of particulate matter the particulate matter having preselected particle sizes
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
- E01C5/06—Pavings made of prefabricated single units made of units with cement or like binders
- E01C5/065—Pavings made of prefabricated single units made of units with cement or like binders characterised by their structure or component materials, e.g. concrete layers of different structure, special additives
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a production method of a nano composite sand-based self-cleaning type environment-friendly water permeable brick and a road, which comprises a concrete bottom layer and a sand-based surface layer arranged on the concrete bottom layer, wherein the concrete bottom layer and the sand-based surface layer are compounded to form an integral structure; the concrete bottom layer is prepared from the following raw materials in parts by weight: 20-35 parts of cement, 8-10 parts of water, 65-75 parts of natural aggregate, 15-25 parts of recycled aggregate, 0.08-0.25 part of anthracene water reducer and 0.06-0.20 part of triethanolamine-sulfate composite early strength agent; the sand base surface layer is prepared from the following raw materials in parts by mass: 90-97 parts of nano coated color sand and 3-10 parts of composite modified epoxy resin. Ground and the self-cleaning formula environmental protection road of nanometer composite sand base that this brick of permeating water was laid can in time dredge and discharge the rainwater, are favorable to the growth of peripheral vegetation, and can replenish groundwater effectively, alleviate municipal drainage system pressure, reduce because surface gathered water to the influence of traffic, construct the sponge city, reduce the emergence of waterlogging incident.
Description
The technical field is as follows:
the invention belongs to the technical field of building materials, and particularly relates to a nano composite sand-based self-cleaning type environment-friendly water permeable brick and a production method of a road.
Background art:
most of the raw materials used by the traditional concrete pavement bricks and roads are natural aggregates; the natural aggregate is inexhaustible, and the exploitation of a large amount of natural aggregate can cause the shortage of mountain stone resources and damage to the environment. The invention utilizes the recycled aggregate to produce high-quality permeable bricks and permeable roads, thereby solving the problem of resource waste; the urban construction waste is reduced. At present, the ground of occasions such as urban squares, commercial streets, sidewalks, community moving grounds and the like is mainly paved by materials with low water permeability such as granite, marble, cement bricks and the like, and the ground is impervious due to paving of the materials with low water permeability, so that the burden of urban drainage facilities is increased, and the health of urban vegetation is influenced; and rainwater can not directly permeate underground during raining, so that surface water is accumulated, people can go out difficultly, and urban waterlogging is caused by heavy rain.
In addition, the main raw materials of some water permeable bricks in the field of building materials in the market at present adopt ceramics or concrete. The water permeable bricks made of ceramics or concrete are easy to be polluted, and the stains are not easy to be removed, thereby greatly influencing the beautiful appearance of urban roads.
The invention content is as follows:
the technical problem to be solved by the invention is as follows: aiming at the defects in the prior art, the production method of the nano composite sand-based self-cleaning environment-friendly water permeable brick and the road which are integrally formed, have high compression resistance and breaking strength, good water permeability, water filterability and water retention and have the photocatalytic self-cleaning function is provided.
In order to solve the technical problems, the invention is realized by the following technical scheme: a nano composite sand-based self-cleaning environment-friendly water permeable brick and a road comprise a concrete bottom layer and a sand-based surface layer arranged on the concrete bottom layer, wherein the concrete bottom layer and the sand-based surface layer are compounded to form an integral structure; the concrete bottom layer is prepared from the following raw materials in parts by mass: 20-35 parts of cement, 8-10 parts of water, 65-75 parts of natural aggregate, 15-25 parts of recycled aggregate, 0.08-0.25 part of anthracene water reducer and 0.06-0.20 part of triethanolamine-sulfate composite early strength agent; the sand base surface layer is prepared from the following raw materials in parts by mass: 90-97 parts of nano coated color sand and 3-10 parts of composite modified epoxy resin.
Preferably, the concrete bottom layer is prepared from the following raw materials in parts by weight: 30 parts of cement, 8 parts of water, 65 parts of natural aggregate, 15 parts of recycled aggregate, 0.18 part of anthracene water reducer and 0.12 part of triethanolamine-sulfate composite early strength agent.
Preferably, the sand base surface layer is preferably prepared from the following raw materials in parts by mass: 96 parts of nano coated color sand and 4 parts of composite modified epoxy resin.
Preferably, the thickness ratio of the sand-based surface layer to the concrete bottom layer is 1: 6-1: 7.
Preferably, the natural aggregate is crushed stone or pebble with the particle size of 5 mm; the recycled aggregate is construction waste with the particle size of 3 mm.
The production process of nanometer composite sand-base self-cleaning environment protecting water permeable brick and road includes the following steps:
s1, preparing a concrete material of the concrete bottom layer and a sand-based material of the sand-based surface layer;
s2, putting the concrete material into a mould, vibrating uniformly to compact the concrete material, and pressurizing to form a concrete bottom layer;
s3, production of the nano composite sand-based self-cleaning environment-friendly water permeable brick: filling the sand base surface layer material on the concrete bottom layer in the mould, vibrating to compact the material, and pressurizing to form a sand base surface layer; after the sand base surface layer and the concrete bottom layer are pressed into a whole, demoulding is carried out, and watering and curing are carried out after 24 hours, thus obtaining the nano composite sand base self-cleaning environment-friendly water permeable brick;
s4, paving the nano composite sand-based self-cleaning environment-friendly permeable road: spreading and jolting the prepared concrete bottom layer materials, and then trowelling the surface of the concrete layer; spreading sand base surface layer on the sand base surface layer by using a spreading machine, and carrying out watering maintenance after 24 hours, wherein the maintenance time is not less than 7 days; and paving the nano composite sand-based self-cleaning environment-friendly permeable road.
Preferably, the preparation method of the concrete material comprises the following steps: weighing the raw materials according to the mass parts of the raw materials of the concrete bottom layer; pouring the recycled aggregate, the natural aggregate and 70% of water into a stirrer, and uniformly stirring; then pouring cement into the mixture and stirring the mixture evenly; adding the rest water, and pasting and stirring; finally, adding a water reducing agent and an early strength agent, and uniformly stirring to obtain the required concrete material; the preparation method of the sand-based material comprises the following steps: weighing the raw materials according to the mass parts of the raw materials of the sand base surface layer; and adding the composite modified epoxy resin into the nano coated colored sand and stirring to obtain the sand-based material.
Preferably, step S3 further includes: and leveling the surface of the concrete top layer.
Preferably, in step S3, the conditions of the nano composite sand-based self-cleaning environmental-friendly water permeable brick and the road maintenance are as follows: the temperature is 20 +/-2 ℃, the watering and the curing are carried out once after twenty-four hours, the humidity is more than or equal to 95 percent, and the total curing time is 28 days.
Preferably, in step S3, the conditions for maintaining the nanocomposite sand-based self-cleaning type environment-friendly road are as follows: and compacting the sand base surface layer paved by the paver for 24 hours, watering and curing, wherein the total curing time is 28 days.
Compared with the prior art, the invention has the advantages that:
the nano composite sand-based self-cleaning environment-friendly water permeable brick and the road have the integrally formed concrete bottom layer and sand-based surface layer, the concrete bottom layer ensures the pressure resistance and the folding resistance of the water permeable brick, and the sand-based surface layer ensures that the water permeable brick and the road have good water permeability and water retention; ground and the self-cleaning formula environmental protection road of nanometer composite sand base that this brick of permeating water was laid can in time dredge and discharge the rainwater, are favorable to the growth of peripheral vegetation, and can replenish groundwater effectively, alleviate municipal drainage system pressure, reduce because surface gathered water to the influence of traffic, construct the sponge city, reduce the emergence of waterlogging incident.
The recycled aggregate is added into the concrete bottom layer, so that the consumption of the natural aggregate is saved, the cost is reduced, the urban garbage is reduced, and the environment is protected and the energy is saved; the addition of the nano TiO2 into the surface sand base has a photocatalytic self-cleaning function, so that organic stains on the surface of the brick can be decomposed and removed by self, and the urban environment is beautified.
The production method of the nano composite sand-based self-cleaning environment-friendly water permeable brick is manufactured by integral molding, and has simple production process and low cost.
The specific implementation mode is as follows:
the present invention will be described in detail with reference to specific embodiments below:
nanometer composite sand-based self-cleaning environmental-friendly permeable brick and road comprise a concrete bottom layer and a sand-based surface layer arranged on the concrete bottom layer, wherein the concrete bottom layer and the sand-based surface layer are compounded to form an integrated structure, so that the sand-based surface layer and the concrete bottom layer are arranged in an upper layer and a lower layer. The thickness ratio of the sand base surface layer to the concrete bottom layer is 1: 5-1: 15.
the concrete bottom layer ensures that the permeable brick has higher compressive strength and rupture strength, and is prepared from the following raw materials in parts by mass; 20-35 parts of cement, 8-10 parts of water, 15-25 parts of recycled aggregate, 50-65 parts of natural aggregate, 0.08-0.25 part of anthracene water reducer and 0.06-0.20 part of triethanolamine-sulfate composite early strength agent; the recycled aggregate comprises one or more of waste concrete, broken bricks, tiles, glass ceramics, furnace slag, mineral waste, gypsum and light recycled aggregate. The lightweight recycled aggregate comprises waste plastics, waste rubber, waste tires, wood, waste paper and the like, and the application of the lightweight recycled aggregate can effectively reduce the weight of the water permeable brick. The particle size of the recycled aggregate is 3mm, and the recycled aggregate effectively reduces municipal refuse, saves the using amount of natural aggregate, reduces the exploitation of environmental mountain rocks, and is environment-friendly and energy-saving by recycling various waste aggregates. The natural aggregate is crushed stone or pebble with the particle size of 5mm, and the mud content of the crushed stone or pebble is 0.5 percent.
The sand-based surface layer is prepared from the following raw materials in parts by mass: compound modified epoxy resin: 3-10 parts of nano film-coated colored sand (added with nano Tio2) 90-97 parts of nano TiO2, which has super-hydrophilicity and is not easy to form water drops on the surface of the nano film-coated colored sand, but forms a uniformly spread water film; the nano TiO2 also has a self-cleaning function, and can further oxidize substances stained on the nano TiO2 into gas or other substances easy to wipe off under the photocatalysis. Therefore, the nano TiO2 is added into the nano film-coated colored sand on the sand-based surface layer, so that the prepared nano composite sand-based self-cleaning environment-friendly water permeable brick has water permeability and photocatalytic self-cleaning functions, can prevent water falling on the brick from accumulating and can decompose and remove organic stains on the surface of the brick by self.
When the nano composite sand-based self-cleaning environment-friendly water permeable brick is used for paving the ground, the sand-based surface layer faces upwards, and the concrete bottom layer faces downwards, so that the paved ground has good water permeability and water retention property, can dredge and discharge rainwater in time, has a photocatalytic self-cleaning function, can decompose and remove organic stains on the surface of the brick by self, and beautifies the environment.
The invention relates to a production method of a nano composite sand-based self-cleaning environment-friendly water permeable brick and a road, which comprises the following steps:
s1, preparing a concrete material of the concrete bottom layer and a sand-based material of the sand-based surface layer;
s2, putting the concrete material into a mould, vibrating uniformly to compact the concrete material, and pressurizing to form a concrete bottom layer;
s3, production of the nano composite sand-based self-cleaning environment-friendly water permeable brick: filling the sand base surface layer material on the concrete bottom layer in the mould, vibrating to compact the material, and pressurizing to form a sand base surface layer; after the sand base surface layer and the concrete bottom layer are pressed into a whole, demoulding is carried out, and watering and curing are carried out after 24 hours to obtain the nano composite sand base self-cleaning type environment-friendly water permeable brick;
s4, paving a nano composite sand-based self-cleaning environment-friendly permeable road, paving and jolting the prepared concrete bottom layer materials, and then leveling the surface of the concrete layer; and paving a sand-based surface layer on the nano composite sand-based self-cleaning environment-friendly permeable road, compacting the sand-based surface layer by using a paver, and watering and curing the sand-based surface layer after 24 hours to finish paving the nano composite sand-based self-cleaning environment-friendly permeable road.
The invention is further illustrated by the following specific examples
Example 1:
the nano composite sand-based self-cleaning environment-friendly water permeable brick comprises a concrete bottom layer and a sand-based surface layer arranged on the concrete bottom layer, wherein the concrete bottom layer and the sand-based surface layer are compounded to form an integral structure. The thickness ratio of the sand base surface layer to the concrete bottom layer is 1: 6;
the concrete bottom layer is prepared from the following raw materials, by mass, 28 parts of cement, 8 parts of water, 15 parts of recycled aggregate, 75 parts of natural aggregate, 0.15 part of an anthracene water reducer and 0.12 part of a triethanolamine-sulfate composite early strength agent. Wherein, the cement is preferably Qilian mountain P.O42.5 grade cement; selecting waste concrete blocks with the particle size of 3mm from the recycled aggregate; the natural aggregate is crushed stone with the particle size of 5 mm.
The sand-based surface layer is prepared from the following raw materials in parts by mass: 96 parts of nano coated color sand and 4 parts of composite modified epoxy resin.
The production method of the nano composite sand-based self-cleaning environment-friendly water permeable brick comprises the following steps:
s1, preparing a sand-based material of the sand-based surface layer and a concrete material of the concrete bottom layer;
the preparation method of the sand-based material comprises the following steps: weighing the raw materials according to the mass parts of the raw materials of the sand base surface layer, namely: 96 parts of nano coated color sand and 4 parts of composite modified epoxy resin; and adding the composite modified epoxy resin into the nano coated colored sand, and uniformly stirring to obtain the sand-based material.
The preparation method of the concrete material comprises the following steps: weighing 28 parts of cement, 8 parts of water, 15 parts of recycled aggregate, 75 parts of natural aggregate, 0.15 part of anthracene water reducer and 0.12 part of triethanolamine-sulfate composite early strength agent according to the mass parts of the components of the concrete bottom layer. Pouring the recycled aggregate, the natural aggregate and 70% of water into a stirrer, and stirring for 10-20 s; then pouring cement into the mixture, and stirring for 20-30 s; adding the rest water for gelatinization stirring for 60-80 s; and finally, adding a water reducing agent and an early strength agent, and stirring for 100-140 s, preferably 120s to obtain the concrete material. The recycled aggregate is selected from waste concrete, the waste concrete is firstly smashed into blocks before adding, impurities such as cement paste, sand base and the like on the surface of the concrete blocks are removed, screening and grading are carried out, and the concrete blocks with the grain size of 3mm are selected.
And S2, filling the concrete material into a mould, vibrating to compact the concrete material, and pressurizing to form a concrete bottom layer.
And S3, filling the sand-based material into the mould above the concrete bottom layer, vibrating uniformly, and pressurizing to form a sand-based surface layer. Controlling the loading amount of the sand-based material and the concrete material to form a layer with the thickness ratio of 1: 6 sand base surface layer and concrete bottom layer. And (3) leveling the surface of the sand-based surface layer by adopting a scraper to obtain the nano composite sand-based self-cleaning environment-friendly water permeable brick with a smooth surface.
And S4, after the sand-based surface layer and the concrete bottom layer are pressed into a whole, demolding, and watering and curing after 24 hours to obtain the nano composite sand-based self-cleaning environment-friendly water permeable brick. Wherein, the curing conditions are as follows: the temperature is 20 +/-2 ℃, the humidity is more than or equal to 95 percent, and the curing time is 28 days.
The compressive strength, the breaking strength, the water permeability and the water retention of the prepared nano composite sand-based self-cleaning environment-friendly water permeable brick are detected according to the sand-based water permeable brick industry standard in the Chinese people's republic of China building industry standard (JC/T376-2012), and the compressive strength, the breaking strength, the water permeability and the water retention of the prepared nano composite sand-based self-cleaning environment-friendly water permeable brick are 42MPa in 28 days, 6.2MPa in breaking strength, 7.6ml/min.cm & lt 2 & gt in water permeability, 6.3MPa in breaking strength, 4.5 times in impact resistance, 0.118g/cm & lt 3 & gt in water retention, 13 times in aging water permeability, 74BPN in skid resistance and 31.6mm in abrasion resistance (pit length) so that organic stains on the brick surface can be decomposed and removed by self.
Example 2:
the nano composite sand-based self-cleaning environment-friendly water permeable brick comprises a concrete bottom layer and a sand-based surface layer arranged on the concrete bottom layer, wherein the concrete bottom layer and the sand-based surface layer are compounded to form an integral structure. The thickness ratio of the sand base surface layer to the concrete bottom layer is 1: 6; the concrete bottom layer is prepared from the following raw materials in parts by mass: 30 parts of cement, 10 parts of water, 16 parts of recycled aggregate, 74 parts of natural aggregate, 0.14 part of anthracene water reducer and 0.13 part of triethanolamine-sulfate composite early strength agent. Wherein, the cement is preferably Qilianshan P.O 42.5.5 grade cement, and the recycled aggregate is selected from waste concrete blocks with the particle size of 3 mm; the natural aggregate is crushed stone with the particle size of 5 mm.
The sand-based surface layer is prepared from the following raw materials in parts by mass: 95 parts of nano coated color sand and 5 parts of composite modified epoxy resin;
the production method of the nano composite sand-based self-cleaning environment-friendly water permeable brick comprises the following steps:
sl, preparing a sand-based material of a sand-based surface layer and a concrete material of a concrete bottom layer;
the concrete preparation method of the sand base surface layer material and the concrete bottom layer material can be seen in example 1, and the difference lies in the parts by weight of the raw materials used for the sand base surface layer and the concrete bottom layer, and the details are not described herein.
And S2, filling the concrete material into a mould, vibrating uniformly, and pressurizing to form a concrete bottom layer.
S3, placing the sand-based material on the concrete bottom layer in the mould, vibrating to compact the material, and pressurizing to form a sand-based surface layer; controlling the loading amount of the sand-based material and the concrete material to form a layer with the thickness ratio of 1: 6.5 sand base course and concrete bottom course. Adopting a scraper to trowel the surface of the sand-based surface layer so as to obtain the nano composite sand-based self-cleaning environment-friendly water permeable brick with the smooth surface of the sand-based surface layer;
and S4, after the sand-based surface layer and the concrete bottom layer are pressed into a whole, demoulding, and adding water for curing after 24 hours to obtain the nano composite sand-based self-cleaning environment-friendly water permeable brick. Wherein, the curing conditions are as follows: the temperature is 20 ℃ and 2 ℃, and the humidity is more than or equal to 95 percent; the curing time was 28 days.
And (3) detecting the compressive strength, the breaking strength, the water permeability and the water retention of the prepared nano composite sand-based self-cleaning environment-friendly water permeable brick according to the water permeable brick industry standard in the building industry standard (JG/T376-2012 sand-based water permeable brick) of the people's republic of China. The obtained nano composite sand-based self-cleaning environment-friendly water permeable brick has the advantages that the 28-day compressive strength is 44Mpa, the breaking strength is 6.3Mpa, the impact resistance is 4.5 times, the water retention rate is 0.118g/cm3, the water permeability rate is 8.6ml/(min. cm2), the water permeability aging is 13 times, the skid resistance is 73BPN, the wear resistance (pit length) is 30.6mm, and organic stains on the surface of the brick can be decomposed and removed by self.
Example 3
The nano composite sand-based self-cleaning environment-friendly road comprises a concrete bottom layer and a sand-based surface layer arranged on the concrete bottom layer, wherein the concrete bottom layer and the sand-based surface layer are compounded to form an integral structure. The thickness ratio of the sand base surface layer to the concrete bottom layer is 1: 8; the concrete bottom layer is prepared from the following raw materials in parts by mass: 35 parts of cement, 9 parts of water, 73 parts of recycled aggregate, 17 parts of natural aggregate, 0.12 part of anthracene water reducer and 0.16 part of triethanolamine-sulfate composite early strength agent, wherein the cement is preferably Qilian mountain P.O42.5 grade cement. Selecting waste concrete blocks with the particle size of 3mm from the recycled aggregate; the natural aggregate is crushed stone with the particle size of 5 mm.
The sand-based surface layer is prepared from the following raw materials in parts by mass: 96 parts of nano coated color sand and 4 parts of composite modified epoxy resin.
The paving method of the nano composite sand-based self-cleaning environment-friendly permeable road comprises the following steps:
s1, preparing a sand-based material of the sand-based surface layer and a concrete material of the concrete bottom layer.
The concrete preparation method of the sand-based material and the concrete material can be seen in example 1, and the concrete preparation method is different from the concrete preparation method in the mass parts of the raw materials used for the sand-based surface layer and the concrete bottom layer, and the details are not described herein.
S2, paving the nano composite sand-based self-cleaning environment-friendly permeable road: and spreading and jolting the prepared concrete bottom layer materials, and then trowelling the surface of the concrete layer to form the concrete bottom layer.
And S3, paving the sand-based surface layer on the road surface by using a paver, compacting, and watering and curing after 24 hours to finish paving the nano composite sand-based self-cleaning environment-friendly permeable road.
S4, pressurizing the sand-based surface layer and the concrete bottom layer into a whole, and watering and curing once after 24 hours to obtain the nano composite sand-based self-cleaning environment-friendly permeable road. Wherein, the curing conditions are as follows: the temperature is 20 +/-2 ℃, and the humidity is more than or equal to 95 percent; the curing time was 28 days.
And (3) detecting the compressive strength, the bending-tensile strength, the water permeability coefficient, the wear resistance and the freezing resistance of the prepared nano composite sand-based self-cleaning environment-friendly water permeable road according to the technical specification of the water permeable concrete pavement in the national institute of people's republic of China (CJJ/T135-2009). The compressive strength of the prepared nano composite sand-based self-cleaning environment-friendly permeable road is 34Mpa in 28 days, the bending strength is 3.8Mpa, the water permeability coefficient (15 ℃) is 2.3mm/s, the wear resistance (pit length) is 28.1mm, and the freezing resistance (the loss rate of the compressive strength after 25 times of freeze-thaw cycles) is 15.6 percent; and can decompose and remove the organic stains on the road surface by self.
In conclusion, the nano composite sand-based self-cleaning environment-friendly water permeable brick and the road have high compressive strength and breaking strength, and good water permeability, water filterability and water retention; the nano composite sand-based self-cleaning environment-friendly water permeable brick and the road are integrally formed, and the production method is simple and low in cost. The nanometer composite sand-based self-cleaning environment-friendly water permeable brick and the ground paved by the road in occasions such as urban squares, commercial streets, sidewalks, community moving grounds and the like are firm and durable, have good water permeability, water drainability and water retention property, can dredge and discharge rainwater in time, are beneficial to the growth of peripheral vegetation, can effectively supplement underground water, reduce the pressure of a municipal drainage system and reduce the influence of accumulated water on the traffic due to the road surface; has the photocatalysis self-cleaning function, can decompose and remove organic stains on the surfaces of the bricks by self, and beautifies urban environment.
The paving method of the nano composite sand-based self-cleaning environment-friendly permeable road comprises the following steps: the manufacturing process of the materials for the concrete bottom layer and the sand base surface layer is completely the same as that of the materials for the concrete bottom layer and the sand base surface layer of the permeable brick, and the description is omitted. Spreading and jolting the prepared concrete bottom layer materials, and then trowelling the surface of the concrete layer; spreading sand base layer on the sand base layer by using a spreading machine and compacting. Watering and curing after 24 hours, wherein the curing time is 28 days.
It is to be emphasized that: it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (10)
1. The utility model provides a self-cleaning formula environmental protection of nanometer composite sand base brick and road that permeates water which characterized in that: the sand-based floor comprises a concrete bottom layer and a sand-based surface layer arranged on the concrete bottom layer, wherein the concrete bottom layer and the sand-based surface layer are compounded to form an integral structure; the concrete bottom layer is prepared from the following raw materials in parts by mass: 20-35 parts of cement, 8-10 parts of water, 65-75 parts of natural aggregate, 15-25 parts of recycled aggregate, 0.08-0.25 part of anthracene water reducer and 0.06-0.20 part of triethanolamine-sulfate composite early strength agent; the sand base surface layer is prepared from the following raw materials in parts by mass: 90-97 parts of nano coated color sand and 3-10 parts of composite modified epoxy resin.
2. The nano-composite sand-based self-cleaning environment-friendly water permeable brick and road as claimed in claim 1, wherein: the concrete bottom layer is prepared from the following raw materials in parts by weight: 30 parts of cement, 8 parts of water, 65 parts of natural aggregate, 15 parts of recycled aggregate, 0.18 part of anthracene water reducer and 0.12 part of triethanolamine-sulfate composite early strength agent.
3. The nano-composite sand-based self-cleaning environment-friendly water permeable brick and road as claimed in claim 1, wherein: the sand base surface layer is preferably prepared from the following raw materials in parts by mass: 96 parts of nano coated color sand and 4 parts of composite modified epoxy resin.
4. The nanocomposite sand-based self-cleaning environment-friendly water permeable brick and road as claimed in any one of claim 1, wherein: the thickness ratio of the sand base surface layer to the concrete bottom layer is 1: 6-1: 7.
5. The nano-composite sand-based self-cleaning environment-friendly water permeable brick and the road thereof according to any one of claim 1, wherein: the natural aggregate is broken stone or pebble with the particle size of 5 mm; the recycled aggregate is construction waste with the particle size of 3 mm.
6. The production method of the nanocomposite sand-based self-cleaning environment-friendly water permeable brick and the road according to any one of claims 1 to 5, characterized in that; the method comprises the following steps:
s1, preparing a concrete material of the concrete bottom layer and a sand-based material of the sand-based surface layer;
s2, putting the concrete material into a mould, vibrating uniformly to compact the concrete material, and pressurizing to form a concrete bottom layer;
s3, production of the nano composite sand-based self-cleaning environment-friendly water permeable brick: filling the sand base surface layer material on the concrete bottom layer in the mould, vibrating to compact the material, and pressurizing to form a sand base surface layer; after the sand base surface layer and the concrete bottom layer are pressed into a whole, demoulding is carried out, and watering and curing are carried out after 24 hours, thus obtaining the nano composite sand base self-cleaning environment-friendly water permeable brick;
s4, paving the nano composite sand-based self-cleaning environment-friendly permeable road: spreading and jolting the prepared concrete bottom layer materials, and then trowelling the surface of the concrete layer; spreading sand base surface layer on the sand base surface layer by using a spreading machine, and carrying out watering maintenance after 24 hours, wherein the maintenance time is not less than 7 days; and paving the nano composite sand-based self-cleaning environment-friendly permeable road.
7. The production method of the nanocomposite sand-based self-cleaning type environment-friendly water permeable brick and the road as claimed in claim 6, is characterized in that: the preparation method of the concrete material comprises the following steps: weighing the raw materials according to the mass parts of the raw materials of the concrete bottom layer; pouring the recycled aggregate, the natural aggregate and 70% of water into a stirrer, and uniformly stirring; then pouring cement into the mixture and stirring the mixture evenly; adding the rest water, and pasting and stirring; finally, adding a water reducing agent and an early strength agent, and uniformly stirring to obtain the required concrete material; the preparation method of the sand-based material comprises the following steps: weighing the raw materials according to the mass parts of the raw materials of the sand base surface layer; and adding the composite modified epoxy resin into the nano coated colored sand and stirring to obtain the sand-based material.
8. The production method of the nanocomposite sand-based self-cleaning type environment-friendly water permeable brick and the road as claimed in claim 6, is characterized in that: step S3 further includes: and leveling the surface of the concrete top layer.
9. The production method of the nanocomposite sand-based self-cleaning type environment-friendly water permeable brick and the road as claimed in claim 6, is characterized in that: in step S3, the conditions of the nano composite sand-based self-cleaning environmental-friendly water permeable brick and the road maintenance are as follows: the temperature is 20 +/-2 ℃, the watering and the curing are carried out once after twenty-four hours, the humidity is more than or equal to 95 percent, and the total curing time is 28 days.
10. The production method of the nanocomposite sand-based self-cleaning type environment-friendly water permeable brick and the road as claimed in claim 6, is characterized in that: in step S3, the conditions for maintenance of the nano composite sand-based self-cleaning environmental protection road are as follows: and compacting the sand base surface layer paved by the paver for 24 hours, watering and curing, wherein the total curing time is 28 days.
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Application publication date: 20191220 |